Pharmacology of atropine ✓ Passing Score: 50% 📝 Questions: 10 🎓 Practice Quiz Welcome! This is a practice quiz to test your knowledge. Please enter your details below to participate. Your results will be emailed to you upon completion. Your Information Name * Email * Start Quiz → Question 1 of 10 1 Which statement accurately describes the effect of atropine on the sweat glands? * It blocks muscarinic receptors, inhibiting sweating and causing dry skin. It causes generalized vasoconstriction, reducing sweat production indirectly. It stimulates nicotinic receptors, causing excessive salivation. It has no direct effect on eccrine sweat glands. It increases sweating, leading to a cooling effect. 2 Atropine is sometimes used as a pre-anesthetic medication primarily to achieve which of the following? * Block neuromuscular transmission Reduce the risk of malignant hyperthermia Prevent postoperative nausea and vomiting Decrease excessive bronchial and salivary secretions Potentiate the effect of opioid analgesics 3 Compared to scopolamine, atropine generally has: * A stronger ganglionic blocking effect. A longer duration of action and greater peripheral selectivity. A higher affinity for muscarinic M1 receptors specifically. A greater propensity for causing profound sedation. A shorter duration of action and less CNS penetration. 4 Why is physostigmine often used as an antidote for severe atropine poisoning (excluding its use in treating certain types of heart block)? * Physostigmine is a direct cardiac stimulant. Physostigmine acts as a non-selective adrenergic agonist. Physostigmine is a centrally acting acetylcholinesterase inhibitor that reverses CNS toxicity. Physostigmine is a competitive muscarinic antagonist. Physostigmine directly antagonizes the effects of atropine on the GI tract. 5 Atropine overdose is potentially lethal due to its effects on which system, leading to cardiovascular collapse? * Direct myocardial depression Peripheral sympathetic nervous system blockade Profound central respiratory depression High doses blocking nicotinic receptors at the autonomic ganglia Severe peripheral vasodilation leading to hypotension 6 The toxic effects resulting from an overdose of atropine are often summarized by the mnemonic \\\"hot as a hare, blind as a bat, dry as a bone, red as a beet, and mad as a hatter.\\\" Which specific effect corresponds to \\\"mad as a hatter\\\"? * Dry skin Mydriasis Urinary retention Central nervous system (CNS) excitation/delirium Hyperthermia 7 Which of the following effects is NOT typically associated with the systemic administration of atropine? * Decreased salivary secretions (dry mouth) Mydriasis (pupil dilation) Increased gastrointestinal motility Bronchodilation Tachycardia 8 A common clinical use for atropine in ophthalmology is: * To inhibit aqueous humor production temporarily To treat acute glaucoma by constricting the pupil To induce miosis for diagnostic purposes To cause cycloplegia for refraction examination To treat cataracts 9 Atropine is classified pharmacologically as a: * Muscarinic agonist Cholinesterase inhibitor Nicotinic antagonist Beta-adrenergic blocker Non-selective muscarinic antagonist 10 In the treatment of bradycardia, atropine exerts its primary effect by blocking which receptors? * Nicotinic receptors in the ganglia Muscarinic M3 receptors in the ventricles Alpha-1 receptors in the vasculature Muscarinic M2 receptors in the sinoatrial (SA) node Beta-1 receptors in the heart ← Previous Next → Submit Quiz ✓
